Copyright for wfmath source package in Bionic

Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0
Source: https://github.com/worldforge/wfmath

Files: *
Copyright: 1999-2012 The Worldforge Project
           2002-2012 Ron Steinke
           2002-2011 Al Riddoch
           2012-2013 Stephen M. Webb 
License: GPL-2+

Files: wfmath/randgen.cpp
Copyright: 1997-2002 Makoto Matsumoto and Takuji Nishimura
           2002-2009 Ron Steinke
           2013      Stephen M. Webb 
License: GPL-2+

Files: wfmath/wrapped_array.h
Copyright: 1999 Bernd Gaertner
License: GPL-2+

Files: ltmain.sh
Copyright: 1996-2001, 2003-2010 Free Software Foundation, Inc.
License: GPL-2+

Files: debian/*
Copyright: 2002 Michael Koch 
           2012-2013 Stephen M. Webb 
           2016-2017 Olek Wojnar 
License: GPL-2+

License: GPL-2+
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 .
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 .
 You should have received a copy of the GNU General Public License along
 with this program; if not, write to the Free Software Foundation, Inc.,
 .
 On Debian systems, the full text of the GNU General Public License version 2
 can be found in the file `/usr/share/common-licenses/GPL-2'.
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.